Decided to rent a car for the 4 days while in Koh Samui. Did some research and the two companies at the airport with the best prices are SIXT and Thai Rent-a-Car. Coming from the USA, I have used SIXT when driving in Europe, but never used Thai Rent a car. What is the general opinion with Thai Rent a car? Thai is priced $140, SIXT is $160 and Hertz is ~$200.